Razor-stropping machine.



H. I. JONES.

RAZOR STROPPING MACHINE. APPLICATION FILED FEB. 28, 1911.

1,283,790. Patented Nov. 5, 1918.

INVENTOR EJJanea,

ATTORNEY UNITED STATES PATENT OFFICE.

HUGH J. JONES, OF'DENVER, COLORADO, ASSIGNOR TOBANNER srEoIALTY'MANUFAo- TUBING COMPANY, OF DENVER, COLORADO, A CORPORATION OF COLORADO.

RAZOE-STROPPING MACHIN E1 Specification of Letters Patent: I

Patented' Nov. 5', 1918;

Application'filed February 28, 1917. Serial No. 151,558.

I '0 all whom it ma concern:

Be it known t at I, HUGH J. JONES, a citizen of the United States, residing at Denver, inthe county of Denver and State of Colorado, have invented new and usefulImprovements in Razor-'Stropping Machines, of which the following is a specification.

This invention relates to stropping machines employed primarily for sharpening safety razor blades, and for properly locating the same on a strop in the stroppin'g. operation of such blade.

An object of the'present invention resides in the production of a stropping machine of the above stated character wherein meansare employed for automatically turningtherazor as the same is drawn over the strop, and further tending to centrally position the carriage on the frame when the stropping operation of the blades is completed, and tending to hold the blades in a perpendicular position.

Further, the invention, among other features, contemplates the provision of a machine of this character which in construction shall be simple and inexpensive, wherein use is made of a holder for supporting the base plate in frictional contact with the strop, whereby through the assistance of a yieldable member, movement is imparted to the carriage to swing the latter from side to side, in order that the cutting edges of the blade may be properly sharpened.

\Vith the above and other objects in view, the invention consists in the novel features, details of construction and combination of parts which will hereinafter be more fully set forth, illustrated in the accompanying drawing and pointed out in the appended claim.

Figure 1 is a perspective view of the stropping machine constructed for use;

Fig. 2 is a plan view of the base plate with the carriage removed therefrom;

Fig. 3 is a perspective view of the carriage detached from the base plate; and

Fig. 4 is a plan view of the machine illustrated as associated with a strop.

Referring more particularly to the ac companying drawing, in which like characters of reference refer to corresponding parts in the several views, the device in its entirety consists of a substantially keystoneshaped base plate 5 having formed integral with one end thereof a handle 6. This base plate 5 embodies a broadened free end 7- and a pair of spacedside' strips 8 con verging in" a direction toward the handle 6 and connectedw-ith one another through the medium of aconnecting strip 9 arranged'in spaced parallel relation with the broadened end 7 of the carriage forming a pair of openings 10 andllu I preferably construct the base plate 5 of metal, and oneof the horizontal walls of the opening, 11 is bent to provide a vertically arranged sectorshaped rack 12;

Extending beneath and for substantially t-he'full lengthof the base plate 5' is a carriage 13 pivotally connected at the contractedend- 14 of the base .plate through' the medium of the pin 15. This carriage 13 may be preferably constructed of any suitable material, such as metal or the like, and constitutes an arm 16 gradually increasing in transverse dimension toward the free end thereof, and the latter mentioned end of the arm being bent to provide the same with a vertically arranged post 17 which is disposed in parallelism with the, post 18 provided on the arm at a point adjacent the inner end of said arm, and journaled in these posts and extending lengthwise of the arm is a revoluble shaft 19. The protruding free end of the shaft 19 carries a pinion 20 which in turn meshes with the sector-shaped rack 12, whereby movement is imparted to the blade holder 21 to throw the latter from side to side as the shaft 19 is rotated. Inasmuch as the posts 17 and 18 are projected up through the openings 11 and 10 of the base plate, this will cause the same to abut with the confronting walls of the strips 8 of the frame tending to serve as stops. Connected with the depending angularly arranged lip 23 formed integral with the rear end of the arm 16 is a guide 24 constituting a bowed leaf spring, and its point of connection with the lip 23 is denoted by the character 25. This guide 24 tends to retain the under face of the carriage 13 in frictional contact with the strop A for a purpose to be hereinafter set forth. Secured to the inner face of the post 18 and disposed in a parallel plane with the guide 24 is a U-shaped spring 26 with the means 27 fastening the same to the post 18 passing through the intermediate portion thereof. The outer ends of the spring 26 are flared in an outward direction, as denoted by the character 28 and adapted to abut with the confronting faces of the strips 8, serving to an extent to tension the carriage and retain the latter centrally of the base plate 5 and further supporting the blade holder 21 in a perpendicular position When no movement is imparted to the machine. This spring 26 tends further to cause a quick operation of the holder 21 from. side to side to prevent the blade contained in such holder from marring or inutilating the strop A upon the completion of the stroke of the machine in one direction. Therefore, it will be obvious that both faces of the cutting edge of the blade will be accurately and etliciently sharpened.

From the foregoing description, taken in connection with the accompanying drawing, the advantages of construction and the method of operation will be readily apparent to those skilled in the art to which the invention relates, and While I have described the principles of operation of the invention, together with the device which i 110W consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and that such changes may be made when desired as are Within the scope of the appended claim.

lVhat is claimed as new is: I

A stropping machine comprising a handle, a base plate provided on one end of said handle and provided With a pair of openings, a carriage pivotally connected to and at a point beneath said base plate, spaced posts formed on said carriage and project ing upwardly through the openings of the base plate, a shaft journaled in said posts, a blade holder carried by said shaft, means terminally secured to said carriage for holding the latter in frictional contact with the strop and a spring secured to one of the posts of said carriage and terminally contacting with the Walls forming one of the openings of the base plate for automatically throwing the holder.

in testimony whereof I a-tiix inv signature.

HUGH J." JONES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D, E. 

